213213111222 has 16 divisors (see below), whose sum is σ = 429288145200. Its totient is φ = 70594049952.

The previous prime is 213213111217. The next prime is 213213111227. The reversal of 213213111222 is 222111312312.

It is an interprime number because it is at equal distance from previous prime (213213111217) and next prime (213213111227).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213213111227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119245813 + ... + 119247600.

It is an arithmetic number, because the mean of its divisors is an integer number (26830509075).

Almost surely, 2^213213111222 is an apocalyptic number.

213213111222 is an abundant number, since it is smaller than the sum of its proper divisors (216075033978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213213111222 is a wasteful number, since it uses less digits than its factorization.

213213111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238493567.

The product of its digits is 288, while the sum is 21.

Adding to 213213111222 its reverse (222111312312), we get a palindrome (435324423534).

The spelling of 213213111222 in words is "two hundred thirteen billion, two hundred thirteen million, one hundred eleven thousand, two hundred twenty-two".